Infinitive

The infinitive is a verbal noun—it can act as a noun while retaining verbal properties (tense, voice, taking objects).

Common uses: • Complementary: with verbs like "want," "be able" (βούλομαι γράφειν) • Subject/object: "To err is human" (τὸ ἁμαρτάνειν) • Indirect statement: φησὶ γράφειν ("he says that he writes") • Purpose (with article): τοῦ γράφειν ("for the purpose of writing") • Result: ὥστε + infinitive

Infinitive endings: • Present active: -ειν • Aorist active: -σαι (1st), -εῖν (2nd) • Perfect active: -κέναι • Middle/passive: -εσθαι, -σθαι